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[1]王甲春,杨明松,吴鸿枫,等.基于概率分析的普通混凝土抗压强度等级评定[J].厦门理工学院学报,2021,29(1):61-68.[doi:1019697/jcnki16734432202101009]
 WANG Jiachun,YANG Mingsong,WU Hongfeng,et al.Probabilitybased Evaluation of Grade ofCompressive Strength of Ordinary Concrete[J].Journal of JOURNAL OF XIAMEN,2021,29(1):61-68.[doi:1019697/jcnki16734432202101009]
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基于概率分析的普通混凝土抗压强度等级评定(PDF/HTML)
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《厦门理工学院学报》[ISSN:1673-4432/CN:35-1289/Z]

卷:
29
期数:
2021年第1期
页码:
61-68
栏目:
建筑与土木工程
出版日期:
2021-02-28

文章信息/Info

Title:
Probabilitybased Evaluation of Grade of Compressive Strength of Ordinary Concrete
文章编号:
16734432(2021)01006107
作者:
王甲春1杨明松2吴鸿枫1李焕煌1
1厦门理工学院土木工程与建筑学院,福建 厦门 361024; 2福建省长泰县建设工程质量工作站,福建 漳州 363900
Author(s):
WANG Jiachun1YANG Mingsong2WU Hongfeng1LI Huanhuang1
1.School of Civil Engineering & Architecture,Xiamen University of Technology,Xiamen 361024,China 2.Construction Engineering Quality Supervision Station,Zhangzhou 363900,China
关键词:
混凝土抗压强度等级评定概率分析保证率正态分布
Keywords:
concretecompressive strengthgrade evaluationprobability analysisguarantee ratenormal distribution
分类号:
TU528
DOI:
1019697/jcnki16734432202101009
文献标志码:
A
摘要:
通过正态分布保证率,建立普通混凝土抗压强度等级设计与评定之间的概率联系,并给出不同工况下的抗压强度等级评定方法及保证率。结果表明:普通混凝土配合比设计的抗压强度是通过混凝土抗压强度代表值的平均值,在95%的保证率条件下计算得到的;普通混凝土抗压强度评定统计方法基于普通混凝土的抗压强度服从正态分布,抗压强度的平均值和最小值的保证率不同。当混凝土样本数量≥10组,混凝土抗压强度标准差已知时,抗压强度的平均值大于等于设计强度的保证率是75%;抗压强度标准差未知时,根据试样组数,混凝土抗压强度的平均值大于等于设计强度的保证率分别是875%、853%和829%,低于混凝土配合比设计时的保证率,同时约束混凝土抗压强度的最小值;当混凝土样本数量<10组时,混凝土抗压强度评定采用非统计方法即安全系数方法来评定。
Abstract:
Probability relation between grade and its evaluation of the compressive strength of ordinary concrete is established with normal distribution of the probability,which includes the evaluation methods and probability of the compressive strength grade under different working conditions.The analysis results show that the designed compressive strength of ordinary concrete composition is calculated as the average value of the representative value of the concrete compressive strength with the probability of 0.95.The statistical method for the evaluation is based on the normal distribution of the compressive strength of ordinary concrete and the different probabilities of the average value and minimum value of the compressive strength of ordinary concrete.When the number of concrete samples is greater than or equal to 10 and the standard deviation of concrete compressive strength is known,the probability for the average value of concrete compressive strength to be greater than or equal to the designed strength is 0.75when the standard deviation of concrete compressive strength is unknown,the probability for the average value of concrete compressive strength to be greater than or equal to the designed strength is 0.875,0.853 and 0.829 respectively according to the number of concrete sample groups,lower than the requirements for the probability design while high enough to restrict the minimum value of the compressive strength of the concretewhen the number of concrete samples is less than 10 groups,the non statistical method—the safety factor method—is used for the evaluation of the concrete.compressive strength.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:20200622修回日期:20210129 基金项目:福建省自然科学基金项目(2019J01864);厦门市科技计划项目(3502Z20183044);厦门理工学院教学改革项目(JGY201643)厦门理工学院大学生创新创业训练计划项目(2020) 通信作者:王甲春,男,教授,博士,研究方向为建筑节能材料的性能测试,Email:jchwang@xmut.edu.cn。
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